Alert archive / North Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 117, NWS Greenville-Spartanburg, SC

July 14, 2000Iredell County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 14, 2000, 7:35 PM EDT for Iredell County, North Carolina. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 14, 2000, 7:35 PM EDT (23:35 UTC)
Expired: Jul 14, 2000, 8:00 PM EDT
In force: 25 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Iredell County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.6 hours before the alert went out and 93 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 310 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 539 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KGSP 142336
SVRGSP
NCC097-150000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
735 PM EDT FRI JUL 14 2000

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN IREDELL COUNTY IN THE PIEDMONT OF NORTH CAROLINA

* UNTIL 800 PM EDT

* AT 735 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A 
SEVERE   THUNDERSTORM 3 MILES SOUTHEAST OF DOWNTOWN 
STATESVILLE...MOVING SOUTHEAST AT   5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL EASTERN IREDELL COUNTY AT 750 PM EDT

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGEw HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY THUNDERSTORM.

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 14, 2:55 PM EDT, 4 hours 40 minutes earlier.

Area forecast discussion, Jul 14, 2:55 PM EDT, 4 hours 40 minutes before

SCZ001>014-019-NCZ033>037-048>059-062>072-082-GAZ010-017-018-026-028-
029-150139-

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
255 PM EDT FRI JUL 14 2000

STRONG VORT MAX DROPPING INTO OH VALLEY LOOKS TO BE ON TRACK TO MOVE
THROUGH WRN CAROLINAS TONIGHT.  STRONG CONVECTION ALREADY OCCURING
WITH THIS FEATURE IN AREA OF HIGH INSTABILITY AND STRONG VERTICAL
MOTIONS ASSOCIATED WITH 70KT MID LEVEL JET.  TIMING IS A BIT BETTER
DEFINED WITH A WINDOW OF 02Z-10Z THE FAVORED TIME FOR THE STRONGEST
CONVECTION TO MOVE THROUGH FA.  BOUNDARY LAYER REMAINS VERY MOIST
WITH DEW POINTS IN THE UPPER 60S.  LIFT SHOULD BE LITTLE PROBLEM
WITH FRONTAL BOUNDARY AND DYNAMIC FORCING FROM ALOFT.  EXPECT LOW
LEVEL FLOW TO BACK MORE TO SOUTH AND SOUTHEAST LATER TONIGHT AS
PRESSURE FALLS AHEAD OF VORT MAX MOVE INTO CAROLINAS.  WHILE BETTER
SHEAR WILL MOVE INTO FA TONIGHT...BEST FORCING REMAINS WELL NORTH.
THEREFORE...ANTICIPATE BEST POTENTIAL WILL BE HAIL AND DAMAGING
WINDS.  WILL NOT RULE OUT THE ISOLATED SUPERCELL THOUGH. META RH
FIELDS SUGGEST QUICK DRYING OF COLUMN SHORTLY AFTER MIDNIGHT BUT
CLOSER LOOK AT SPEC HUMIDITY FIELDS SHOWS BOUNDARY LAYER REMAINING
VERY MOIST THROUGH THE NIGHT.  CONVERGENCE/DIVERGENCE FIELDS SHOW
BEST AREA FOR LIFT TO BE EASTERN HALF OF FA.  LINE OF CONVECTION
COULD LEAVE BOUNDARY TO SLIDE SOUTHWEST SO NO PART OF FA SHOULD BE
WITHOUT THE POTENTIAL FOR STRONG THUNDERSTORMS.  WILL TAPER POPS
NORTHEAST TO SOUTHWEST TO ACCOUNT FOR THIS BUT WILL STILL GO WITH
HIGHER POPS...LIKELY SEEMS BEST CATEGORY.  SOME LINGERING CONVECTION
WILL CONTINUE INTO SATURDAY BUT SHOULD BE SCATTERED AND ON THE
DECLINE AS BEST LIFT MOVES AWAY AND AIR MASS DOES BEGIN TO DRY OUT.
WILL KEEP SATURDAY NIGHT AND SUNDAY DRY.

TEMPERATURES WILL NOT CHANGE A LOT FOR SATURDAY AS BEST COLD
ADVECTION DOES NOT OCCUR UNTIL LATE SATURDAY.  THEREFORE...WILL KEEP
TEMPS AT OR JUST SLIGHTLY COOLER THAN TODAY.  THEN BETTER COOLING
FOR SUNDAY.

EXTENDED FORECAST...TROUGH BEGINS TO LIFT AND WEAKEN AS RIDGE MAKES
A RUN EAST BY MONDAY.  TEMPERATURES WILL RISE SLOWLY AND MOISTURE
TRAPPED UNDER TROUGH WILL RETURN DIURNAL THREAT OF THUNDERSTORMS.

                                                  DELGADO

...PRELIMINARY...
FCSTID = 11
GSP   70  89  64  88 /  60  30   0  10
AND   70  88  64  89 /  60  30   0  10
CLT   70  88  64  87 /  70  30  10  10
HKY   69  87  63  85 /  60  30  10  10
AVL   68  87  63  83 /  60  30  10  10

.GSP...
GA...NONE.
NC...NONE.
SC...NONE.

Nearby

Severe Thunderstorm Warnings in North Carolina, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.